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Transmit Diversity of CDMA

Diversity technology means that after receiving two or more input signals with mutually uncorrelated fading at the same time, the system demodulates these signals and adds them up. Thus, the system can receive more useful signals and overcome fading. A mobile communication channel is a multi-path fading channel and any transmitted signal reaches a receive … Read more

What is T_ADD,T_DROP and T_TDROP in CDMA?

Pilot Detection Threshold (T_ADD) Any Pilot that is strong but is not in the Handoff Direction Message is a source of interference. This Pilot should be immediately moved into the active set for handoff to avoid voice/data degradation or a possible drop call. T_ADD affects the percentage of MS in handoff. It should be low … Read more

Intra RAT HO events in LTE

Below is the List and How Intra RAT HO events in LTE. Event A1 : Serving becomes better than threshold Event A2 : Serving becomes worse than threshold Event A3 : Neighbor becomes offset better than serving Event A4 : Neighbor becomes better than threshold Event A5 : Serving becomes worse than threshold1 and neighbor … Read more